I do believe you mean RIGHT triangle when you said perpendicular triangle.
A right triangle has two legs and a hypotenuse.
The area of a right triangle is 1/2 * (first leg) * (second leg)
How do you determine which ones are the legs and which one is the hypotenuse?
The hypotenuse is ALWAYS the largest number. So, choose the 2 smallest numbers.
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Area of any triangle: 0.5*base*perpendicular height
Area = 1/2*base*perpendicular height.
Area of a scalene triangle: 0.5*base*perpendicular height
No. a equilateral triangle does not have perpendicular sides.
The Right Triangle. Perpendicular lines make a right angle.